Grill stove



FIG. 1 is a top, front, and right side perspective view of a grill stove showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a top and right side perspective view thereof, showing the lid of the grill stove open.

The broken line showing of the dials and burner in the drawings is illustrative of environmental association matter only and forms no part of the claimed design. 

The ornamental design for a grill stove, as shown and described. 